Should I trust my dentist and get a small cavity filled without novacaine?

If he is just filling it, then you won't have to endure the pain of going under the drill. He is probably filling it for cosmetic reasons (so it looks normal), and for the future health of it. Since it's cracked, it is more likely to develop a cavity, then you would have to go under the drill.

If it were me, I'd get it filled in a heart beat because I try to avoid the drill at all costs. It should be painless! Good luck!

Cracks propagate. They get bigger and eventually can crack the tooth in half.. Drilling them out and replacing it with a filling will hopefully get rid of all remnants of a crack. A small filling now or a broken tooth later.

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